Bind all config explicitly

This will be revertable when spf13/viper#761 is resolved.

internal/config/config_test.go

@@ -78,11 +78,10 @@ func TestInitiate(t *testing.T) {
 		os.Setenv("SLACK_THAT_WORKSPACE", "42born2code")
 		os.Setenv("POSTGRES_PASSWORD", "changeme")
 
-		defer os.Unsetenv("INTRA_APP_ID")
-		defer os.Unsetenv("INTRA_APP_SECRET")
-		defer os.Unsetenv("INTRA_WEBHOOKS")
-		defer os.Unsetenv("SLACK_THAT_WORKSPACE")
-		defer os.Unsetenv("POSTGRES_PASSWORD")
+		// Testing unmarshalling of not required env var fields
+		os.Setenv("POSTGRES_HOST", "testinghost")
+
+		defer os.Clearenv()
 
 		expected := Configuration{
 			Environment: "development",
@@ -118,7 +117,7 @@ func TestInitiate(t *testing.T) {
 				Enabled: false,
 			},
 			Postgres: Database{
-				Host:     "localhost",
+				Host:     "testinghost",
 				Port:     "5432",
 				DB:       "postgres",
 				User:     "postgres",

internal/config/load.go

@@ -77,6 +77,44 @@ func bindEnv() {
 		log.Debugf("bound '%s' to '%s'", env, config)
 	}
 
+	// Workaround until unmarshal is supported for unbound environmental variables
+	// See github issue: https://github.com/spf13/viper/issues/761
+	logBinding("environment", "ENVIRONMENT")
+	logBinding("service", "SERVICE")
+
+	logBinding("email_suffix", "EMAIL_SUFFIX")
+
+	logBinding("warn_before", "WARN_BEFORE")
+
+	logBinding("timeout", "TIMEOUT")
+
+	logBinding("postgres.host", "POSTGRES_HOST")
+	logBinding("postgres.port", "POSTGRES_PORT")
+	logBinding("postgres.db", "POSTGRES_DB")
+	logBinding("postgres.user", "POSTGRES_USER")
+
+	logBinding("slack_that.url", "SLACK_THAT_URL")
+	logBinding("slack_that.username", "SLACK_THAT_USERNAME")
+
+	logBinding("rabbitmq.host", "RABBITMQ_HOST")
+	logBinding("rabbitmq.port", "RABBITMQ_PORT")
+	logBinding("rabbitmq.vhost", "RABBITMQ_VHOST")
+	logBinding("rabbitmq.user", "RABBITMQ_USER")
+	logBinding("rabbitmq.password", "RABBITMQ_PASSWORD")
+	logBinding("rabbitmq.queue", "RABBITMQ_QUEUE")
+
+	logBinding("log_level", "LOG_LEVEL")
+
+	logBinding("logstash.host", "LOGSTASH_HOST")
+	logBinding("logstash.port", "LOGSTASH_PORT")
+	logBinding("logstash.protocol", "LOGSTASH_PROTOCOL")
+	logBinding("logstash.levels", "LOGSTASH_LEVELS")
+	logBinding("logstash.enabled", "LOGSTASH_ENABLED")
+
+	logBinding("sentry.levels", "SENTRY_LEVELS")
+	logBinding("sentry.enabled", "SENTRY_ENABLED")
+	// End workaround
+
 	logBinding("sentry.dsn", "SENTRY_DSN")
 
 	logBinding("postgres.password", "POSTGRES_PASSWORD")